login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A195935 Positive integers a for which there is a primitive (-1/3)-Pythagorean triple (a,b,c) satisfying a<=b. 2
1, 7, 8, 9, 9, 9, 11, 13, 13, 15, 15, 16, 16, 17, 17, 19, 21, 23, 23, 24, 24, 25, 27, 27, 27, 29, 29, 31, 32, 33, 37, 39, 39, 40, 40, 41, 43, 45, 45, 47, 48, 51, 53, 55, 56, 56, 57, 57, 59, 63, 63, 63, 64, 65, 69, 71, 72, 72, 72, 72, 81, 83, 88, 89, 91, 93, 95, 96 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

See A195770 for definitions of k-Pythagorean triple, primitive k-Pythagorean triple, and lists of related sequences.

LINKS

Table of n, a(n) for n=1..68.

EXAMPLE

Primitive (-1/3)-Pythagorean triples

(c^2=a^2+b^2+k*a*b, where k=-1/3):

1,3,3

7,144,143

8,9,11

9,11,13

9,16,17

9,80,79

11,72,71

13,72,71

13,495,493

15,32,33

MATHEMATICA

(See A195932.)

CROSSREFS

Cf. A195932.

Sequence in context: A257394 A196278 A006969 * A168097 A020719 A162787

Adjacent sequences:  A195932 A195933 A195934 * A195936 A195937 A195938

KEYWORD

nonn

AUTHOR

Clark Kimberling, Sep 26 2011

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified March 28 07:59 EDT 2020. Contains 333079 sequences. (Running on oeis4.)